Deep dives, tutorials, and real-world lessons from building production applications.
A complete walkthrough of building an enterprise-level authentication system from scratch. Covers JWT access/refresh token rotation, OTP with 5-minute expiry, 2FA, failed login lockout, and integrating 6 OAuth providers via Passport.js — exactly how I built it for Toolffy.
Real production lessons from building 20+ database modules. When raw SQL gives you control and when Prisma saves you time — a practical comparison with real code examples.
Step-by-step guide to containerizing a NestJS application, setting up Nginx reverse proxy, and automating deployment with a CI/CD pipeline using deploy.sh and ecosystem.config.js.
Practical guide to deciding when to use Server Components, Client Components, and how to structure your Next.js 14 application for maximum performance and developer experience.
How I integrated Gemini AI for smart product recommendations in Toolffy — from API setup to streaming responses and caching results with Redis for optimal performance.
Building a flexible, scalable RBAC system without any library — middleware, role guards, and permission layers explained with real production code from the Toolffy platform.
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